公开(公告)号：US5748050A

公开(公告)日：1998-05-05

申请号：US625452

申请日：1996-03-29

Applicant: Michael B. Anderson

Inventor： Michael B. Anderson

IPC: H03B1/00 ,  H03B5/24 ,  H03K3/03 ,  H03K3/354 ,  H03L7/099 ,  H03B5/00

CPC classification number: H03L7/0995 ,  H03B5/24 ,  H03K3/0315 ,  H03K3/354 ,  H03B2201/02

Abstract: A voltage controlled oscillator (VCO) having a generally linear transfer characteristic across a wide frequency range of operation. The VCO is comprised of a voltage-to-current converter (V-I) and a current-controlled oscillator (ICO). A linearization of the output response of the VCO is accomplished by proper selection of the output responses of the V-I and ICO circuits, where the V-I portion is designed to have an inverse nonlinearity response as compared to the nonlinearity response of the ICO portion of the VCO. The combined effect is a linear response for the VCO. A nonlinear V-I characteristic can be achieved by adding several piecewise linear responses together to produce a combined nonlinear response.

Abstract translation: 一种压控振荡器（VCO），其在宽的频率操作范围内具有大致线性的传递特性。 VCO由电压 - 电流转换器（V-I）和电流控制振荡器（ICO）组成。 VCO的输出响应的线性化通过对VI和ICO电路的输出响应的适当选择来实现，其中VI部分被设计为具有与VCO的ICO部分的非线性响应相比的反非线性响应 。 组合效应是VCO的线性响应。 可以通过将多个分段线性响应加在一起以产生组合的非线性响应来实现非线性V-I特性。

公开(公告)号：US5564089A

公开(公告)日：1996-10-08

申请号：US49938

申请日：1993-04-20

Applicant: Raymond L. Barrett, Jr.

Inventor： Raymond L. Barrett, Jr.

IPC: H03B1/00 ,  H03B5/24 ,  H03F3/45 ,  H04B1/26 ,  H03B5/20

CPC classification number: H03B5/24 ,  H03F3/4521 ,  H03B2201/02 ,  H03F2203/45656 ,  H03F2203/45674

Abstract: A current controlled variable frequency oscillator (260) operates at a characteristic frequency that is determined primarily by a scaled current. A filter cascade (320) receives the scaled current for setting a filter cascade frequency substantially equal to the characteristic frequency. Additionally, the filter cascade (320) receives a triangular signal at a non-inverting input, the filter cascade (320) converting the triangular signal into a sinewave signal. A lowpass filter (330) receives the scaled current for setting a lowpass filter frequency to a frequency substantially less than the characteristic frequency. The lowpass filter (330) also receives the sinewave signal and provides an average signal therefrom. A comparator (340) receives the scaled current, wherein the comparator (340) compares the sinewave signal and the average signal for providing a substantially squarewave signal therefrom. An integrator (310) is provided for receiving the scaled current, the integrator (310) integrating the substantially squarewave signal for providing the triangular signal therefrom.

Abstract translation: 电流控制可变频率振荡器（260）以主要由缩放电流确定的特征频率工作。 滤波器级联（320）接收缩放的电流，用于设置基本上等于特征频率的滤波器级联频率。 另外，滤波器级联（320）在非反相输入端接收三角形信号，滤波器级联（320）将三角形信号转换为正弦波信号。 低通滤波器（330）接收用于将低通滤波器频率设置为基本小于特征频率的频率的缩放电流。 低通滤波器（330）还接收正弦波信号并从其提供平均信号。 比较器（340）接收缩放的电流，其中比较器（340）比较正弦波信号和平均信号以从其提供基本上方波的信号。 提供积分器（310）用于接收定标电流，积分器（310）积分基本上方波信号以从其提供三角形信号。

公开(公告)号：US5485126A

公开(公告)日：1996-01-16

申请号：US186742

申请日：1994-01-25

Applicant: John E. Gersbach ,  Masayuki Hayashi

Inventor： John E. Gersbach ,  Masayuki Hayashi

IPC: H03B1/00 ,  H03K3/017

CPC classification number: H03K3/017 ,  H03B2201/02

Abstract: A ring oscillator circuit which provides an output signal having a substantially constant, fifty (50%) percent duty cycle. The circuit includes a plurality of cascaded inverting stages, each of which has an input circuit for detecting an output voltage of a preceding inverting stage. One inverting stage provides a voltage to an output node. A clamping circuit, coupled to the output node, provides current to the output node whenever the instantaneous voltage output at the output node departs from a threshold voltage of a subsequent logic circuit. The current is such as to clamp the average voltage output to the threshold voltage. The plurality of cascaded inverting stages is coupled to power supply voltage across capacitor configured transistors. The ring oscillator circuit can be employed within a voltage controlled oscillator.

Abstract translation: 一种环形振荡器电路，其提供具有基本上恒定的百分之五十（50％）占空比的输出信号。 该电路包括多个级联的反相级，其中每一级具有用于检测前级反相级的输出电压的输入电路。 一个反相级向输出节点提供电压。 每当输出节点处的瞬时电压输出离开后续逻辑电路的阈值电压时，耦合到输出节点的钳位电路向输出节点提供电流。 电流是将平均电压输出钳位到阈值电压。 多个级联反相级与电容器配置的晶体管两端的电源电压耦合。 环形振荡器电路可以用在压控振荡器内。

公开(公告)号：US5384553A

公开(公告)日：1995-01-24

申请号：US97877

申请日：1993-07-27

Applicant: Isoshi Takeda ,  Shigeyoshi Hayashi

Inventor： Isoshi Takeda ,  Shigeyoshi Hayashi

IPC: H03B1/00 ,  H03B5/26 ,  H03K3/0231 ,  H03B5/24 ,  H03L1/02

CPC classification number: H03K3/0231 ,  H03B5/26 ,  H03B2201/02

Abstract: A voltage control oscillation circuit comprises an oscillation loop and a control current generating circuit. The oscillation loop comprises: a first charge-discharge circuit including a first transistor circuit for converting a reverse voltage signal as a first input voltage into a first charge-discharge current according to a first conversion ratio, and a first capacitor which is charged and discharged by the first charge-discharge current for generating a first charge-discharge voltage signal; a second charge-discharge circuit including a second transistor circuit for converting the first charge-discharge voltage signal as a second input voltage into a second charge-discharge current according to a second conversion ratio, and a second capacitor which is charged and discharged by the second charge-discharge current for generating a second charge-discharge voltage signal; and a reverse circuit for reversing the second charge-discharge voltage signal into the reverse voltage signal. The control current generating circuit comprises: a voltage-to-current conversion circuit for converting the control voltage into a first control current; and a current value regulating circuit including a resistor circuit constituted by a plurality of resistors for generating a regulating current corresponding to a resistance value of the resistor circuit; and means for generating a second control current by adding the regulating current to the first control current.

Abstract translation: 电压控制振荡电路包括振荡回路和控制电流产生电路。 振荡回路包括：第一充放电电路，包括第一晶体管电路，用于根据第一转换比将作为第一输入电压的反向电压信号转换为第一充放电电流;以及第一电容器，其被充电和放电 通过用于产生第一充放电电压信号的第一充放电电流; 第二充电 - 放电电路，包括第二晶体管电路，用于根据第二转换比将作为第二输入电压的第一充电 - 放电电压信号转换成第二充电 - 放电电流;以及第二电容器，其由 用于产生第二充放电电压信号的第二充放电电流; 以及用于将第二充电 - 放电电压信号反转成反向电压信号的反向电路。 控制电流产生电路包括：电压 - 电流转换电路，用于将控制电压转换成第一控制电流; 以及电流值调节电路，包括由多个电阻器构成的电阻电路，用于产生对应于所述电阻电路的电阻值的调节电流; 以及用于通过将调节电流加到第一控制电流来产生第二控制电流的装置。

公开(公告)号：US5087896A

公开(公告)日：1992-02-11

申请号：US641954

申请日：1991-01-16

Applicant: Cheng P. Wen ,  Gregory S. Mendolia ,  Mario Siracusa ,  Joseph J. Maieron ,  William D. Higdon

Inventor： Cheng P. Wen ,  Gregory S. Mendolia ,  Mario Siracusa ,  Joseph J. Maieron ,  William D. Higdon

IPC: H03B1/00 ,  H03B5/18

CPC classification number: H03B5/1852 ,  H03B2200/0086 ,  H03B2201/011 ,  H03B2201/014 ,  H03B2201/02 ,  Y10T29/49004

Abstract: A coplanar waveguide based microwave monolithic integrated circuit (MMIC) oscillator chip (14) having an active oscillator element (16) and a resonant capacitor (18) formed thereon is flip-chip mounted on a dielectric substrate (12). A resonant inductor (22) is formed on the substrate (12) and interconnected with the resonant capacitor (18) to form a high Q-factor resonant circuit for the oscillator (10). The resonant inductor (22) includes a shorted coplanar waveguide section (24) consisting of first and second ground strips (24b,24c), and a conductor strip (24a) extending between the first and second ground strips (24b,24c) in parallel relation thereto and being separated therefrom by first and second spaces (26a,26b) respectively. A shorting strip (24d) electrically interconnects adjacent ends of the conductor strip (24a) and first and second ground strips (24b,24c) respectively. A dielectric film (34) may be formed over at least adjacent portions of the conductor strip (24 a) and first and second ground strips (24b,24c). The resonant inductor (22) is adjusted to provide a predetermined resonant frequency for the oscillator (10) by using a laser (40) to remove part of the dielectric film (34) in the first and second spaces (26a,26b) for fine adjustment, and/or to remove part of the shorting strip (24d) at the ends of the first and second spaces (26a,26b) for coarse adjustment.

公开(公告)号：US4973920A

公开(公告)日：1990-11-27

申请号：US438288

申请日：1989-11-16

Applicant: Wolfdietrich G. Kasperkovitz

Inventor： Wolfdietrich G. Kasperkovitz

IPC: H03B1/00 ,  H03B5/20 ,  H03B5/24 ,  H03B27/00

CPC classification number: H03B5/20 ,  H03B2200/0062 ,  H03B2200/0066 ,  H03B2200/0078 ,  H03B2201/02 ,  H03B27/00 ,  H03B5/24

Abstract: A controllable quadrature oscillator, having a pair of oscillator outputs for supplying a pair of phase quadrature oscillator signals, is a cascade circuit of two quadrature sections incorporated in a regenerative loop each contributing a 90.degree. phase shift in the regenerative state of the loop. In order to increase the frequency control range of such a controllable quadrature oscillator and to enable realization by integrated circuit technology, each quadrature section is formed of two stages in cascade arranged in a signal path between an input terminal and an output terminal for the quadrature section. One of the stages includes a first amplifier having a low-pass characteristic and the other of the stages includes a second amplifier having a low-pass characteristic and having a feedback path. The gain of at least one of the two amplifiers is controllable for controlling the frequency of the pair of phase quadrature oscillator signals.

公开(公告)号：US3936773A

公开(公告)日：1976-02-03

申请号：US515499

申请日：1974-10-17

Applicant: Bruce L. Wilkinson

Inventor： Bruce L. Wilkinson

IPC: H03B1/00 ,  H03B5/20 ,  H03B27/00

CPC classification number: H03B5/20 ,  H03B2200/0066 ,  H03B2200/0078 ,  H03B2201/02 ,  H03B27/00

Abstract: A voltage controlled sine wave oscillator is provided in which the frequency of the output signal is a linear function of the amplitude of an input control signal. The output signal may be of constant amplitude with changes in frequency, or its amplitude may be a linear function of its frequency. Two-phase quadrature output signals may be provided for multi-phase applications. The oscillator of the invention in the embodiment to be described herein is solid state, and it makes use of operational integrators, analog multipliers, and associated circuitry to generate the outputs.

Abstract translation: 提供了一种电压控制正弦波振荡器，其中输出信号的频率是输入控制信号幅度的线性函数。 输出信号可以具有恒定幅度随频率变化，或者其幅度可能是其频率的线性函数。 可以为多相应用提供两相正交输出信号。 本文中要描述的实施例中的本发明的振荡器是固态的，并且其利用操作积分器，模拟乘法器和相关电路来产生输出。

公开(公告)号：US3800241A

公开(公告)日：1974-03-26

申请号：US29052972

申请日：1972-09-20

Applicant: FLUKE J MFG CO INC

Inventor： OCHS E

IPC: H03B1/00 ,  H03B5/20 ,  H03B27/00 ,  H03L5/00 ,  H03L7/099 ,  H03B3/02

CPC classification number: H03B5/20 ,  H03B27/00 ,  H03B2200/0066 ,  H03B2200/0078 ,  H03B2201/02 ,  H03L5/00 ,  H03L7/099

Abstract: An amplitude controlled oscillator which is capable of generating a wide range of stable frequencies having a variable amplitude which may be accurately controlled. A series of amplifiers are connected so as to provide a standard feedback oscillator, the phase shift around the loop being 360* and the loop gain close to unity. The zero crossing of the oscillator output signal in the negative direction is first detected, which enables a gate by which the positive going peaks of the oscillator signal are sampled for a predetermined fixed period of time. This sampled voltage is then compared with a fixed DC reference voltage and any difference is used to increment an integrator, the output of which is fed back to the oscillator, ultimately stabilizing the oscillator amplitude at the value of the reference voltage.

Abstract translation: 一种振幅控制振荡器，其能够产生可以被精确控制的具有可变幅度的宽范围的稳定频率。 连接一系列放大器，以提供标准的反馈振荡器，环路周围的相移为360°，环路增益接近于单位。 首先检测振荡器输出信号在负方向上的过零点，这使得能够将振荡器信号的正向峰值采样预定的固定时间段的栅极。 然后将该采样电压与固定的直流参考电压进行比较，并且使用任何差分来增加积分器，其积分器被反馈到振荡器，最终将振荡器振幅稳定在参考电压的值。

公开(公告)号：US3639859A

公开(公告)日：1972-02-01

申请号：US3639859D

申请日：1969-08-28

Applicant: PHILIPS CORP

Inventor： ZWLISEN WILHELMUS ANTONIUS JOS

IPC: H03B5/00 ,  G08C19/12 ,  H03B1/00 ,  H03B5/20 ,  H03B5/24 ,  H03B27/00

CPC classification number: H03B5/24 ,  H03B27/00 ,  H03B2200/0078 ,  H03B2201/02 ,  Y10S148/103

Abstract: An oscillator having a first phase-shifting network, an inverting amplifier and a second phase-shifting network comprising two impedances; one of the impedances is externally adjustable and determines the frequency of the oscillator signal. A total phase shift of 180* is achieved by means of the first phase-shifting network which provides a phase shift of substantially 90* in a frequency independent manner and by the second phase-shifting network which provides an additional phase shift of substantially 90* in a frequency-dependent manner.

Abstract translation: 具有第一相移网络，反相放大器和包括两个阻抗的第二相移网络的振荡器; 其中一个阻抗可由外部调节，并确定振荡器信号的频率。 通过第一移相网络实现180°的总相移，该网络以频率独立的方式提供大致90°的相移，并且通过第二移相网络提供基本上90°的附加相移 以频率依赖的方式。

公开(公告)号：US3495187A

公开(公告)日：1970-02-10

申请号：US3495187D

申请日：1968-04-10

Applicant: INT STANDARD ELECTRIC CORP

Inventor： JEZIERSKI EUGENIUSZ CZESLAW JA ,  MCLELLAN JOHN

IPC: H03B1/00 ,  H03B5/36 ,  H03B5/30

CPC classification number: H03B5/36 ,  H03B2200/0026 ,  H03B2200/0048 ,  H03B2200/0056 ,  H03B2200/007 ,  H03B2201/02 ,  H03B2201/0258 ,  H03B2201/0283